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Finding the Fourth Proportional to 220,608.55, 330,291.35 and 140,449.53

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Solution

The fourth proportional to 220,608.55, 330,291.35 and 140,449.53 is: 210,278.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,608.55 : 330,291.35 = 140,449.53 : x
  2. Step 2: Convert to fraction form
    220,608.55/330,291.35 = 140,449.53/x
  3. Step 3: Cross multiply
    220,608.55x = 330,291.35 × 140,449.53
  4. Step 4: Simplify right side
    220,608.55x = 46,389,264,870.57
  5. Step 5: Solve for x
    x = 46,389,264,870.57/220,608.55
  6. Step 6: Final answer
    x = 210,278.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.